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A Two Positive chords were recorded using video OSD technique.
No clearly observed misses were recorded for this event.
View the TT14 prediction.
Observers:
1 D Herald,Murrumbateman, NSW, AU
2 J Newman,Flynn, ACT, AU
3(P) Prediction TT14, 30 Dec 2014
Discussion:
The circle above is plotted at the expected 46 km diameter of Pythia . With 2 chords we can be confident of the path of Pythia and that it was north of the predicted line. John Newman's recording had a problem with his GPS time insertion. So Only the duration could be measured by using a frame count. The absolute UTC time has bee estimated by aligning his short chord to fit the circle with Dave Herald's longer chord. Lightcurve data suggests that an ellipse with maximum axis ratio of about 1.15:1 might be a better fit but we have no information about the major axis angle and there is no DAMIT or ISAM model to give a clue of projected shape.
The figure below shows the Tangra light curve of Dave's occultation as analysed by Aota.
The figure below shows the Tangra light curve of John's occultation as analysed by Aota.
Observational Data:
Observation details for MP ( 432 ) Pythia
By Star UCAC4 595-036941
On 2015-01-16 at 13:43:30.0
_______________________________
Observer Dave Herald
Location Murrumbateman, NSW, AU
Longitude +148:59
Latitude -34:57
Altitude 594 m
Datum WGS84
Telescope SCT including Cass and Mak
Aperture 40 cm
Seeing Slight flickering Clear
Camera Type WAT910BD PAL/CCIR
Camera Delay -0.04
Timing GPS - time inserted Video with frame analysis
Disappearance 13:43:41.92
Reappearance 13:43:44.70
Comments: Lightcurve from 13:42:25 to 13:44:24 by Tangra v3.3.2
using AperturePhotometry/AverageBackground.
Analysis by AOTA v4.1.4.1.
Report prepopulated by IOTA Reporting Add-in for OW ver.1.8
_______________________________
Observer John Newman
Location Flynn, ACT, AU
Longitude +149:02
Latitude -35:11
Altitude 657 m
Datum WGS84
Telescope other - specify below
Aperture 41 cm
Seeing Slight flickering Clear other - list in comments
Camera Type WAT120N+ NTSC/EIA
Camera Delay -0.159
Timing GPS - time inserted Video with frame analysis
Disappearance 00:00:13.43:12.33
Reappearance 00:00:13.41:12.80
Comments: A positive event sans Absolute Time Base.
Times adjusted to match Dave Herald's when Pythia is plotted as circle
Report prepopulated by IOTA Reporting Add-in for OW ver.1.8
Analysis by AOTA v4.1.4.1.